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#include <QtCore/QDebug>
#include <QtCore/QPluginLoader>
#include <QtCore/QSettings>
#include <QtCore/QDir>
#include "watchplugininterface.h"
#include "notificationplugininterface.h"
#include "watchletplugininterface.h"
#include "registry.h"
using namespace sowatch;
Registry* Registry::singleRegistry = 0;
Registry* Registry::registry()
{
if (!singleRegistry) {
singleRegistry = new Registry();
}
return singleRegistry;
}
Registry::~Registry()
{
}
Registry::Registry()
: _watcher(new QFileSystemWatcher(this))
{
_watcher->addPath(SOWATCH_DRIVERS_DIR);
_watcher->addPath(SOWATCH_NOTIFICATIONS_DIR);
_watcher->addPath(SOWATCH_WATCHLETS_DIR);
loadDrivers();
loadNotificationProviders();
loadWatchlets();
connect(_watcher, SIGNAL(directoryChanged(QString)),
this, SLOT(handlePluginDirectoryChanged(QString)));
connect(_watcher, SIGNAL(fileChanged(QString)),
this, SLOT(handlePluginFileChanged(QString)));
}
void Registry::loadDrivers()
{
QDir dir(SOWATCH_DRIVERS_DIR);
foreach (QString entry, dir.entryList(QDir::Files)) {
QString file = dir.absoluteFilePath(entry);
loadDriver(file);
}
qDebug() << "loaded drivers" << _driverIds.keys();
}
void Registry::loadNotificationProviders()
{
QDir dir(SOWATCH_NOTIFICATIONS_DIR);
foreach (QString entry, dir.entryList(QDir::Files)) {
QString file = dir.absoluteFilePath(entry);
loadNotificationProvider(file);
}
qDebug() << "loaded notification providers" << _providerIds.keys();
}
void Registry::loadWatchlets()
{
QDir dir(SOWATCH_WATCHLETS_DIR);
foreach (QString entry, dir.entryList(QDir::Files)) {
QString file = dir.absoluteFilePath(entry);
loadWatchlet(file);
}
qDebug() << "loaded watchlets" << _watchletIds.keys();
}
void Registry::loadDriver(const QString &file)
{
QPluginLoader* loader = new QPluginLoader(file, this);
QObject *pluginObj = loader->instance();
if (pluginObj) {
WatchPluginInterface *plugin = qobject_cast<WatchPluginInterface*>(pluginObj);
if (plugin) {
_driverFiles[file] = loader;
_drivers += plugin;
QStringList drivers = plugin->drivers();
foreach (const QString& driver, drivers) {
_driverIds[driver] = plugin;
}
_watcher->addPath(file);
} else {
qWarning() << "Invalid plugin" << file;
loader->unload();
delete loader;
}
} else {
qWarning() << "Invalid plugin" << file << loader->errorString();
loader->unload();
delete loader;
}
}
void Registry::loadNotificationProvider(const QString &file)
{
QPluginLoader* loader = new QPluginLoader(file, this);
QObject *pluginObj = loader->instance();
if (pluginObj) {
NotificationPluginInterface *plugin = qobject_cast<NotificationPluginInterface*>(pluginObj);
if (plugin) {
_providerFiles[file] = loader;
_providers += plugin;
QStringList providers = plugin->providers();
foreach (const QString& provider, providers) {
_providerIds[provider] = plugin;
}
_watcher->addPath(file);
} else {
qWarning() << "Invalid plugin" << file;
loader->unload();
delete loader;
}
} else {
qWarning() << "Invalid plugin" << file << loader->errorString();
loader->unload();
delete loader;
}
}
void Registry::loadWatchlet(const QString &file)
{
QPluginLoader* loader = new QPluginLoader(file, this);
QObject *pluginObj = loader->instance();
if (pluginObj) {
WatchletPluginInterface *plugin = qobject_cast<WatchletPluginInterface*>(pluginObj);
if (plugin) {
_watchletFiles[file] = loader;
_watchlets += plugin;
QStringList watchlets = plugin->watchlets();
foreach (const QString& watchlet, watchlets) {
_watchletIds[watchlet] = plugin;
}
_watcher->addPath(file);
} else {
qWarning() << "Invalid plugin" << file;
loader->unload();
delete loader;
}
} else {
qWarning() << "Invalid plugin" << file << loader->errorString();
loader->unload();
delete loader;
}
}
void Registry::unloadDriver(QPluginLoader *loader)
{
QString file = loader->fileName();
WatchPluginInterface *plugin = qobject_cast<WatchPluginInterface*>(loader->instance());
QStringList drivers = plugin->drivers();
foreach (const QString& driver, drivers) {
_driverIds.remove(driver);
}
_drivers.removeAll(plugin);
_driverFiles.remove(file);
_watcher->removePath(file);
// loader->unload();
// TODO : Signal loss of a plugin so that servers can remove it before
// we unload it.
}
void Registry::unloadNotificationProvider(QPluginLoader *loader)
{
QString file = loader->fileName();
NotificationPluginInterface *plugin = qobject_cast<NotificationPluginInterface*>(loader->instance());
QStringList providers = plugin->providers();
foreach (const QString& provider, providers) {
_providerIds.remove(provider);
}
_providers.removeAll(plugin);
_providerFiles.remove(file);
_watcher->removePath(file);
}
void Registry::unloadWatchlet(QPluginLoader *loader)
{
QString file = loader->fileName();
WatchletPluginInterface *plugin = qobject_cast<WatchletPluginInterface*>(loader->instance());
QStringList watchlets = plugin->watchlets();
foreach (const QString& watchlet, watchlets) {
_watchletIds.remove(watchlet);
}
_watchlets.removeAll(plugin);
_watchletFiles.remove(file);
_watcher->removePath(file);
}
void Registry::handlePluginDirectoryChanged(const QString &path)
{
// If the directory changed, rescan it to load new discover new plugins.
if (path == SOWATCH_DRIVERS_DIR) {
QDir dir(path);
foreach (QString entry, dir.entryList(QDir::Files)) {
QString file = dir.absoluteFilePath(entry);
if (!_driverFiles.contains(file)) {
loadDriver(file);
}
}
} else if (path == SOWATCH_NOTIFICATIONS_DIR) {
QDir dir(path);
foreach (QString entry, dir.entryList(QDir::Files)) {
QString file = dir.absoluteFilePath(entry);
if (!_providerFiles.contains(file)) {
loadNotificationProvider(file);
}
}
} else if (path == SOWATCH_WATCHLETS_DIR) {
QDir dir(path);
foreach (QString entry, dir.entryList(QDir::Files)) {
QString file = dir.absoluteFilePath(entry);
if (!_watchletFiles.contains(file)) {
loadWatchlet(file);
}
}
}
}
void Registry::handlePluginFileChanged(const QString &file)
{
QFile f(file);
if (_driverFiles.contains(file)) {
unloadDriver(_driverFiles[file]);
}
if (_providerFiles.contains(file)) {
unloadNotificationProvider(_providerFiles[file]);
}
if (_watchletFiles.contains(file)) {
unloadWatchlet(_watchletFiles[file]);
}
}
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